c45ba91304
Reduce FormattingOptions to 64 bits This is part of https://github.com/rust-lang/rust/issues/99012 This reduces FormattingOptions from 6-7 machine words (384 bits on 64-bit platforms, 224 bits on 32-bit platforms) to just 64 bits (a single register on 64-bit platforms). Before: ```rust pub struct FormattingOptions { flags: u32, // only 6 bits used fill: char, align: Option<Alignment>, width: Option<usize>, precision: Option<usize>, } ``` After: ```rust pub struct FormattingOptions { /// Bits: /// - 0-20: fill character (21 bits, a full `char`) /// - 21: `+` flag /// - 22: `-` flag /// - 23: `#` flag /// - 24: `0` flag /// - 25: `x?` flag /// - 26: `X?` flag /// - 27: Width flag (if set, the width field below is used) /// - 28: Precision flag (if set, the precision field below is used) /// - 29-30: Alignment (0: Left, 1: Right, 2: Center, 3: Unknown) /// - 31: Always set to 1 flags: u32, /// Width if width flag above is set. Otherwise, always 0. width: u16, /// Precision if precision flag above is set. Otherwise, always 0. precision: u16, } ``` |
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rust-analyzer is a modular compiler frontend for the Rust language. It is a part of a larger rls-2.0 effort to create excellent IDE support for Rust.
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